define(function(){
    var mine=function(){
      var canvas=document.querySelector('canvas');
      var ctx=canvas.getContext('2d');
      ctx.lineWidth=5;
      ctx.arc(140,50,20,0,Math.PI*2,false);
      ctx.stroke();
      ctx.beginPath();
      ctx.arc(140,130,50,0,Math.PI,true);
      ctx.stroke();
    }

    return {
      mine:mine
    }



})
